This document discusses diabetes, including definitions, statistics, pre-diabetes, and the optometrist's role. It notes that diabetes affects over 20 million Americans and costs over $132 billion per year. It also outlines the risks of complications like heart disease, stroke, blindness, kidney failure, and lower limb amputations for those with diabetes. The document defines pre-diabetes as higher than normal blood glucose and discusses tests like the fasting plasma glucose test and oral glucose tolerance test to detect pre-diabetes.